<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    *{
        margin:0 auto;
    }
    .container{
        /* 确保中间的内容可以显示出来 */
        min-width:600px;  
    }
    .conter{
        float:left;
        width:100%;
        height:500px;
        background:plum;
    }
    .conter .inner{
        margin:0 200px;
    }
    .left{
        float:left;
        width:200px;
        height:400px;
        margin-left:-100%;
        background:pink;
    }
    .right{
        float:left;
        width:200px;
        height:400px;
        margin-left:-200px;
        background:orange;
    }





</style>
<body>
    <div class="container"> 
        <div class="conter">
            <div class="inner">双飞翼布局</div>
        </div>
        <div class="left"></div>
        <div class="right"></div>
    </div>
</body>
</html>